The average home creates more pollution than does the average car.
33
Pumice is the only rock that floats on water.
14
Iron weighs more after it rusts.
68
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
A cesium atom in an atomic clock beats over nine billion times a second.
43
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
In zero gravity, a candle's flame is round and blue.
16
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51